The 150-kg block A shown is released from rest. If the masses of the pulleys and the cord are neglected and block B is 30-kg; Datum SA SB B What is the value of the upward force pulling B in N?

Q: A. The velocity of a car increases from +2.0 m/s to +16.0 m/s in a time period of 3.5 s. What was…

A: A) Apply the first kinematic equation to determine the average acceleration of the car.

Q: A train starts from rest and accelerates uniformly, until it has traveled 3.3 km and acquired a…

A: Given data:  Initial velocity (v0) = 0 m/s Final velocity (v) = 48 m/s Distance traveled (d) = 3.3…

Q: A mosquito flying 3 mph collides head-on with a car going 55mph in the opposite direction. Which of…

A: The impact force acting on the mosquito and the car is the same as per Newton’s third law of motion.

Q: 2. What is the acceleration along the ground of a 10 kg wagon when it is pulled with a force of 44 N…

A: Given data:  Mass (m) = 10 kg Force (F) = 44 N Angle (θ) = 35° above the horizontal Required: The…

Q: 60.0 kg skier is moving down a snowy hill inclined at 5 degrees above the horizontal with an…

A: mass of skier (m) = 60 kg initial angle of inclined hill (θi) = 5oinitial acceleration = 0.4 ms2

Q: A 4.35 kg cat moves in a straight line (the x-axis). The image shows a graph of the x-component of…

A: Given   mass of cat = m = 4.35 kg moves in a straight line (the x-axis). The image shows a graph of…

Q: A lawn mower is pushed at a constant velocity of 0.76m/s. The person pushes horizontally forwards…

A: Given, v=0.76 m/sF=80 N

Q: A mosquito flying 3 mph collides head-on with a car going 55mph in the opposite direction. Which of…

A: By Newton's 3rd law of motion, action force is equal to reaction force. So, both mosquito and car…

Q: 3. A jet plane has a takeoff speed of Vtakeoff = 60 m/s and can move along the runway at an average…

A: Given: vtakeoff=60 m/s acceleration= 2 m/s2 Length of runway=1.5 km a) 3 Kinetic Equations: Equation…

Q: Two children fight over a 200 g stuffed bear. The 25 kg boy pulls to the right with a 15 N force and…

A: Let m denote the mass of the bear, F1 denote the rightward force (take as positive direction), F­2…

Q: 3. A jet plane has a takeoff speed of Vtakeoff = 60 m/s and can move along the runway at an average…

A: Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: At the end of a race a runner decelerates from a velocity of 8.70 m/s at a rate of 1.80 m/s2. A. How…

A:

Q: A physics book slides off a horizontal table top with a speed of 1.20 m/s. It strikes the floor…

A: Given-             sliding speed of book = 1.2 m/s              time to reach floor  = 0.41 s

Q: in the figure m2=60g m1 = 40 g then the ..=acceleration a

A: Given: Mass of  object: m1=40 [g]=0.04 [kg] Mass of  object: m2=60 [g]=0.06 [kg] The acceleration…

Q: If you toss a ball upward with an initial speed v = 2m/s, it reaches a max height h without air…

A: Given data:  Original initial velocity (v) = 2 m/s, vertically upward  Maximum height = h New…

Q: A 4 kg bowling ball is dropped from a building, and accelerates down toward the earth at 9.8 m/s^2.…

A: Given data:  A 4 kg bowling ball dropped from the building Acceleration = 9.8 m/s2, down towards the…

Q: 1. What is the displacement of a barrel that was going at 15 m/s before stopping as it reached a…

A:

Q: Which of the following is wrong for a freely falling object. X a. If an object is dropped from rest…

A: Need to select: Wrong statement about freely falling object  Consider the acceleration due to…

Q: 6. Freight trains can produce only relatively small accelerations. a. What is the final velocity of…

A: 6)time (t)= 7 min=420 seconds initial velocity (u) = 4.50 m/s Acceleration (a)= 0.0450 m/s2

Q: You are standing in a moving bus, facing forward, and you suddenly fall forward. This happens…

A: Inertia is defined as a property of matter by which it remains at the state of rest or in uniform…

Q: A ball is rolled up a ramp with an initial velocity of +10m/s. It arrives at the bottom of the ramp…

A:

Q: This is a three part problem. A penny is thrown vertically upward with a speed of 10 m/s. Exactly 1…

A: Given: nitial velocity of penny up= 10m/sinitial velocity  of dime ud=15 m/stime interval t=1 sec

Q: 1. A 60.0 kg skydiver is falling through the air (parachute opened). At one point, the acceleration…

A: mass of skydiver,m=60 kg acceleration due to  gravity ,g=10 ms-2 Net acceleration ,a =4.6 ms-2 Force…

Q: A skater of mass m = 45.0 kg initially at rest starts sliding down a frictionless ramp that is at a…

A:

Q: A weather balloon is floating at a constant height above Earth when it releases a pack of…

A: Given values: initial velocity u = -73.5 m/s time t  = 2.2 s

Q: A certain hawk can fly horizontally (i.e., not diving) at a maximum speed of 80.0 km/hr The hawk…

A: Initial speed of the jet, u = 80 km/hr = 80000 m3600 s=22.2 m/s Deceleration, a = 2.75 m/s2 Mass of…

Q: A car is driving along a circular track of diameter d = 0.75 km at a constant speed of v = 22 m/s.…

A:

Q: What is the constant acceleration of the moving object with a velocity of 12.0 cm/s in the positive…

A: Image-1

Q: A street ball is dropped onto a hard floor from a height of 16.1 m and rebounds to a height of 1.34…

A:

Q: 8. 45 kg skier slides down a 410 incline. What would be the magnitude of the skier's acceleration if…

A: Given data The mass of the skier is m = 45 kg The angle of inclination is θ=41° The surface is…

Q: A race car of mass 756 kg accelerates uniformly from 18.5 m/s to 46.1 m/s in 2.47 seconds. What…

A:

Q: The trap-jaw ant, found throughout tropical South America, catches its prey by very rapidly closing…

A: (a).The slope of the Speed-Time graph gives accelaration. In this case ,Maximum Accelaration means…

Q: In t-ball, young players use a bat to hit a stationary ball off a stand. The 140 g ball has about…

A: Given - mass of ball , m =140 g = 0.14 kg initial speed of ball , u = 0 m/s final speed of ball  ,…

Q: Consider the following descriptions of the vertical motion of an object subject only to the…

A: Given: y∘=400 mv∘=10 m/s (a) Acceleration a=dvdt=-g Integrating above eqaution we get…

Q: Q6/A weather balloon is floating at a constant height above Earth when it releases a pack of…

A: In the question, the part (b) is incomplete, so here we give the complete explanation of part (a)…

Q: 7. A feather is dropped on the moon from a height of 1.40 meters. The acceleration of gravity on the…

A:

Q: astronaut weighing 236 lbs on Earth is on a mission to the Moon and Mars.   a.What would he weigh in…

A: Given Mass m = 236 lbs = 236 × 0.454 kg = 107.14 kg Acceleration due to gravity on earth g = 9.8…